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FCC to Mull Widening Clearwire's Channels for Speed Bump

Article Comments  1  

May 24, 2011, 7:31 AM   by Eric M. Zeman
updated May 24, 2011, 7:40 AM

At its upcoming meeting in June, the Federal Communications Commission said it will weigh the idea of allowing Clearwire to widen the channels it uses for its WiMax network from 5.5MHz to 20MHz. Clearwire runs its WiMax network in the 2.5GHz spectrum band, but is limited by the narrow channel. If the FCC allows for the channel widening, Clearwire could in theory double its mobile broadband speeds. However, telecom gear makers would first have to create equipment that could support it and then Clearwire would have to deploy that equipment before any speed gains could be realized. Clearwire has struggled financially the last six months. The FCC is scheduled to meet June 9.

Fierce Wireless »



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May 24, 2011, 3:02 PM

error correction: Clear currently uses 10 MHz WiMAX TDD channels

Something is amiss in this Phonescoop news item and in the Fierce Wireless article to which it links.

Yes, BRS/EBS 2500-2600 MHz channelization is variably 5.5 MHz or 6 MHz bandwidth. See the band plan:

http://wireless.fcc.gov/services/brsebs/data/BRS-EBS ... »

But, as Clear controls nearly all of the spectrum in this band, it does not have to respect the boundaries among electromagnetically adjacent channels.

For example, Clear currently deploys mobile WiMAX using the 10 MHz TDD (time division duplex) profile. Each WiMAX 10 MHz channel spans portions of two or three adjacent BRS/EBS 5.5 MHz or 6 MHz channels.

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